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Almost all Scots (93 percent) believe that being outdoors and enjoying nature makes them feel happier.

But in the busy working day, 40 percent of us spend an hour or less outdoors and almost one in five (18 percent) spend as little as 30 minutes or less outdoors.

Vicky Keenan, Head of Brand at Twinings explained, “When you feel optimistic, the feeling is utterly contagious."

"Optimism has a knock-on effect - we’re more likely to make positive choices that make us feel good inside and out.

“The best thing is that optimism doesn’t have to be spread through overly grand gestures – a simple positive choice like offering your colleague a cup of tea could be the little thing that makes a big difference.